package cn.edu.zafu.bigdata.psy;

class StaticDemo {
    static int count;
    int id;

    static {
        System.out.println("Static block executed");
        count = 0;
    }

    {
        System.out.println("Instance block executed");
        id = count;
        count++;
    }

    public StaticDemo() {
        System.out.println("Constructor executed for ID: " + id);
    }

    public static void displayCount() {
        System.out.println("Number of instances created: " + count);
    }
}

class TestStaticDemo {
    public static void main(String[] args) {
        StaticDemo demo1 = new StaticDemo();
        StaticDemo demo2 = new StaticDemo();
        StaticDemo demo3 = new StaticDemo();

        StaticDemo.displayCount();
    }
}